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发明名称
METHOD OF MEASURING POTENTIAL DIFFERENCE
摘要
申请公布号
JPH02201167(A)
申请公布日期
1990.08.09
申请号
JP19890017641
申请日期
1989.01.30
申请人
HITACHI LTD
发明人
ISHIZUKI TOSHIO;USAMI SABURO
分类号
G01R27/02;G01N27/20;G01R19/00
主分类号
G01R27/02
代理机构
代理人
主权项
地址
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